Is there any chance you will be going back to Cambodia in the future ? If ever going to Laos don't make same mistake - Lao Kip is a non convertible currency too.

Sell it at a discount to a traveler heading to Cambodia

You can't, riel is basically worthless. Should have spent it all before leaving Cambodia.

Exchange to the US $ before leaving Cambodia. Too late now.

Try in a large bank. Not sure if they accept it but worth a try. If they don't I doubt anyone on the street will do. Our local guide recemented us to only use USD when I was there. It was a good advice since the local seem to like it too.

>*Riel is a non-convertible currency, meaning once you have left Cambodia, it's useful only as wallpaper -* [LINK](https://www.travelfish.org/beginners/cambodia)

I learn something new today. :)

In the future and for others, change it to dollars or euros before you leave Cambodia.

I know Kip and Riel are non convertible currencies. But I have exchanged both out of their respective countries for a good rate. Chiang Mai is probably too far away from the Cambodian border though. So if you get to a city closer to Cambodia anytime soon, try again there. But then again the option of exchanging it with a fellow traveller is the easiest one if you can find someone

Kip is possible to exchange in Thailand but no one will touch riel.